Caller ID is "V" and a bunch of numbers.  They leave no message.

I call back after hours (using *67 to block my number).  I hear the following, "The person you have called is unavailable right now.  Please, try again later. <repeat in Spanish> message 2 switch 1 2 2."

I can't say I appreciate them spoofing their caller ID.  Message doesn't identify them.  Smells fishy.